Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 11, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Apr 15, 2011, 6:27 PM CDT for 4 counties in Illinois. It was in force for 48 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 15, 2011, 6:27 PM CDT (23:27 UTC)
- Expired
- Apr 15, 2011, 7:15 PM CDT
- In force
- 48 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
Counties Logan County, IL, Mason County, IL, Menard County, IL, Sangamon County, IL
The radar
The Lincoln radar (KILX), 32 km from the middle of the area, began a volume at 23:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 15, 6:49 PM CDT | FUNNEL CLOUD | Middletown, IL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 15, 12:47 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.5 hours before the alert went out and 95 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1776 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
141 WFUS53 KILX 152327 TORILX ILC107-125-129-167-160015- /O.NEW.KILX.TO.W.0011.110415T2327Z-110416T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LINCOLN IL 627 PM CDT FRI APR 15 2011 THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN LOGAN COUNTY IN CENTRAL ILLINOIS... EAST CENTRAL MASON COUNTY IN CENTRAL ILLINOIS... EASTERN MENARD COUNTY IN CENTRAL ILLINOIS... EXTREME NORTH CENTRAL SANGAMON COUNTY IN CENTRAL ILLINOIS... * UNTIL 715 PM CDT. * AT 625 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ATHENS...OR 13 MILES NORTH OF SPRINGFIELD... AND MOVING NORTH AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... MASON CITY...GREENVIEW...MIDDLETOWN...EASTON...SAN JOSE...EMDEN... SWEETWATER AND NEW HOLLAND. THIS INCLUDES INTERSTATE 155 BETWEEN MILE MARKERS 5 AND 11. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4031 8991 4032 8942 3995 8956 3994 8976 TIME...MOT...LOC 2327Z 185DEG 31KT 3998 8968 $$ BARNES
2 follow-up statements
147 WWUS53 KILX 152351 SVSILX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN IL 651 PM CDT FRI APR 15 2011 ILC107-125-129-167-160015- /O.CON.KILX.TO.W.0011.000000T0000Z-110416T0015Z/ LOGAN IL-MASON IL-MENARD IL-SANGAMON IL- 651 PM CDT FRI APR 15 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME NORTH CENTRAL SANGAMON...EASTERN MENARD...EAST CENTRAL MASON AND NORTHWESTERN LOGAN COUNTIES UNTIL 715 PM CDT... AT 649 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR MASON CITY...MOVING NORTH AT 35 MPH. LOCATIONS IMPACTED INCLUDE... MASON CITY...EASTON...SAN JOSE...EMDEN AND NEW HOLLAND. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4031 8991 4032 8942 3995 8956 3994 8976 TIME...MOT...LOC 2351Z 185DEG 31KT 4018 8968 $$ BARNES
592 WWUS53 KILX 160011 SVSILX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LINCOLN IL 711 PM CDT FRI APR 15 2011 ILC107-125-129-167-160021- /O.EXP.KILX.TO.W.0011.000000T0000Z-110416T0015Z/ LOGAN IL-MASON IL-MENARD IL-SANGAMON IL- 711 PM CDT FRI APR 15 2011 ...THE TORNADO WARNING FOR EXTREME NORTH CENTRAL SANGAMON...EASTERN MENARD...EAST CENTRAL MASON AND NORTHWESTERN LOGAN COUNTIES WILL EXPIRE AT 715 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4031 8991 4032 8942 3995 8956 3994 8976 TIME...MOT...LOC 0011Z 185DEG 31KT 4035 8966 $$ BARNES
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 9:36 AM CDT | Wind Advisory | ILX | Champaign, DeWitt, Fulton, Knox, Logan, McLean and 8 more | 4 hr |
| Apr 15, 4:27 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Menard | 48 min |
| Apr 15, 4:51 PM CDT | Special Weather Statement | ILX | Morgan | 39 min |
| Apr 15, 4:59 PM CDT | Tornado Warning | ILX | Sangamon | 46 min |
| Apr 15, 5:06 PM CDT | Tornado Warning | ILX | Mason, Menard | 39 min |
| Apr 15, 5:17 PM CDT | Tornado Warning | ILX | Sangamon | 43 min |
| Apr 15, 5:28 PM CDT | Tornado Warning | ILX | Morgan, Sangamon | 47 min |
| Apr 15, 5:40 PM CDT | Tornado Warning | ILX | Fulton, Mason, Tazewell | 50 min |
| Apr 15, 5:42 PM CDT | Tornado Warning | ILX | Logan, Menard, Sangamon | 48 min |
| Apr 15, 5:52 PM CDT | Tornado Warning | ILX | Mason, Menard | 17 min |
| Apr 15, 6:00 PM CDT | Tornado Warning | ILX | Sangamon | 45 min |
| Apr 15, 6:23 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria, Tazewell | 52 min |
| Apr 15, 6:28 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Macon, Moultrie, Shelby | 62 min |
| Apr 15, 6:38 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 37 min |
| Apr 15, 6:50 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Cumberland, Effingham, Moultrie, Shelby | 55 min |
Nearby
Tornado Warnings in Illinois, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.